Computer will not boot up after installing Windows 11 upgrade

[RulasMe]

I have an Optiplex Dell desktop computer that will not boot up after installing the Windows 11 upgrade. I am getting an error that says it cannot find the boot disk and to press alt ctl del to reboot. I ended up having to turn off the machine, and then go into the bios at start up (F12) and changed the settings to match UEFI settings required by Microsoft to be able to run it. I made the changes as specified and now it can't use the legacy boot options to start up. The message says:

Start PKE Over IPv4.
PKE-E18 Server response timeout.
Start PKE over IPv6.

These two options IPv4 and IPv6 are the boot options listed. I'm trying to figure out how to have the correct bios settings for windows 11 to be able to boot up from the hard drive after this upgrade.

Diagnostics are good for the computer, I checked. Windows 11 installed just fine with the Flyby11 install. I just can't get into the machine at all now. :(

Ideas on what I should look for? What to fix? I hope the machine isn't hosed.

Thanks.

[BackuPs]

same issue with my dell optiplex. Following this thread. Tried 3 times. After upgrade to windows 11 the system does not boot from the haddrive.

[ws-robin]

Same issue with my dell latitude. I cannot boot the machine. A disk read error has occurred. Press Alt, Ctrl, Del to restart

[tmeister73]

Go into the BIOS. In the SATA section change RAID to AHCI.

That worked for me.

[Sypherenigma179]

Lenovo stuck on Lenovo boot logo. Can’t get into bios or repair. Power-lenovo logo————- no boot options no exiting—-

[Abavoila]

Go into the BIOS. In the SATA section change RAID to AHCI.

That worked for me.

Thanks for the solution, same issue and it's OK for me too now.

[sandeg57]

None of the "solutions" mentioned above have worked for me.
Did the upgrade to win11 through Flyoobe and all worked well.
Switched on this morning and got "A Disk Read Error occurred" tried all of the suggested solutions....... nothing has worked.
Have done a check and the raid SSD's are "OK" and seen from the Dell systems checkers.
Any more ideas, I am using a Dell Precision T3610.